**EXPO: WAEC Mathematics Questions and Answers 2021/2022.**

**WAEC Mathematics Questions and Answers: This WAEC 2021 mathematics expo question and answer is free for all candidates writing this year exams.** **If you are among those writing 2021 WAEC Examination, Feel free to expect free answer here.**

The *West African Examinations Council* is an examination that is for all the west African country (Ghana, Nigeria, Sierra Leone, Liberia, and Gambia).

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**Today’s WAEC Mathematics Questions and Answers Expo Runs, 20th, Monday September 2021**.

MATHS OBJ

1CBCADABBCD

11BCBADCCABC

21CDCAAADACD

31CADACBAABC

41ABAADADBBB

**10a**

X² = 5² + 3²

X² = 25 + 9

X² = 34

X = √34

X = 5.83KM

Tan∅ = opp/adj

Tan∅ = 3/5

Tan∅ = 0.6

∅ = Tan-¹ 0.6

∅ = 30.96

The true bearing of man U from Dogb is 20⁰+30.96⁰

= 50.96

**10b.**

X² + (x+2)² = 10²

X² + ([x+2)(x+2)] = 100

X² + [(x²+2x+2x+4)] =100

X²+x²+4x+4 = 100

2x² + 4x +4 = 100

2x² + 4x + 4 – 100 = 0

2x² + 4x – 96 = 0

X² + 2x – 48 = 0

X² + 8x – 6x – 48 = 0

X (x+8) -6 (x+8) = 0

(X-6) (x+8) = 0

X-6 = 0 or x+0 = 0

x = 6 or x – 8

The true value of X is = 6m

**13a.**

When Sani is 4 years old, T = 3

Principal, P = & 1,000.00

R = 4%

Using A = P ( 1+ r/100)^T

A = 1000 ( 1+ 4/100)³

A = 1000 (1.04)³

A = & 1,124.86

**13b.**

ABC = 180-50=130⁰ (Supplementary<S)

Join A to C : ACD = 90⁰ (< in a semicircle)

CAD = 180 – (ACD+ADC) [sum of <s in a triangle] = 180-(90+50)=40⁰

Also BAC=BCA (base <s of an isosceles)

BAC + BCA + BAC = 180 [sum of <s in a triangle]

2BAC + 130⁰ = 180⁰

BAC = 50/2 = 25

BAD = BAC + CAD

= 25+40

=65⁰

**Question Number 1a.**

**Question 3a and b answers;**

**Question 4a and b answer.**

**Question 5 answers:**

**Question 5b answers:**

**Question 6a answers:**

**Question 6b answers:**

**Question 8a and b answers;**

**See Also: **Download WAEC Maths Syllables

**Question 9a and b answers.**

**Recommended:**

- WAEC Registration Portal
- Junior WAEC BECE Syllabus
- Liberia WAEC Result Checker
- How To Do Correction Of Name And DOB In WAEC Result.
- WAEC Timetable for School Candidates (May/June)

**What to Do in the Exam hall immediately you enter.**

When you enter your Exam hall, locate your exam seat, and sit down there: Your Exam seat is the sit that has your Exam Number written on it. Then on your answer booklet (answers sheet), write your;

- Exam Number
- Center Number
- Full name (Starting from your Surname, Firstname, and Middle Name).
- In the same way, Shade your Name, Exam Number, and Center number accordingly, on the OMR (OBJ answer booklet)

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